<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>京东作业</title>
        <style>
            .kuang{
                width:389px;
                height:43px; 
                border-radius: 7px;
            border: 1px solid #bbbbbb;
            box-shadow: 6px 3px 28px rgba(0,0,0,.2);
            text-align:center;
            }
            div.kuang input{
                text-align:center;
                margin-top: 30px;
            }
            div.kuang button{
                color:#fff;
                background-color: red;
                border-radius: 6px;
                text-align:center;
            }
        </style>
    </head>
    <body>
        <div class="kuang">
            <input type="text" placeholder="搜索 京东商品">
            <button>搜索</button>
            </div>
            </div>
    </body>
</html>